<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>P90 5.1.2 面向对象的特征</title>
</head>

<body>
    <script>
        var obj = 123;
        console.log(obj.toString());
        obj = [1, 2, 3];
        console.log(obj.toString());
        obj = function () { };
        console.log(obj.toString());
    </script>
    <a href="../首页/page05.html">
        <h2>返回上一页面</h2>
    </a>
</body>

</html>